黄土高原水土流失严重的原因主要有哪两点?你认为应采取哪些措施来治理黄土高原水土流失?
正确答案及解析
正确答案
解析
(1)①自然原因：土质疏松、地表光秃裸露、缺少植被保护、夏季(降水集中在7、8月份)多暴雨；
②人为原因：开发历史悠久、人口增长过快、不断开荒种地、过度放牧(毁草毁林)、采矿、修路、修建窑洞等。
(2)治理措施：生物措施和工程措施
①建立高产稳产的基本农田，提高土地的生产力。
②扩大林、草的种植面积。
③水土保持工作应治理与开发相结合。
④控制人口增长，提高人口素质。
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